Eating a few bad melon seeds generally does not cause cancer. If you eat a lot of bad melon seeds for a long time, it may increase the burden on the liver and cause serious indigestion. Bad melon seeds may contain aflatoxin. After a period of accumulation, it is easy to cause carcinogens in the body, leading to cancer in patients. Melon seeds are rich in nutrients. Drinking some melon seeds properly can stimulate the taste nerve on the tongue and promote the secretion of saliva and gastric juice, which is beneficial to digestion and health.